Catalytic conversion method capable of improving product selectivity

A catalytic conversion method and selective technology are applied in the field of high-efficiency utilization of petroleum resources, which can solve the problems of increased dry gas and coke yield, difficult desorption, etc., and achieve reduced dry gas yield, coke yield, and energy consumption. reduced effect

Active Publication Date: 2011-09-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adsorption capacity of various hydrocarbons on the surface of the catalyst is as follows: fused-ring aromatics > condensed-ring cycloalkanes > alkenes > single-ring aromatics > single-ring cycloalkanes > alkanes, so condensed-ring aromatics are most likely to be adsorbed on strong acid sites, and are difficult to desorb. Attached, finally dehydrogenated and condensed on the catalyst to form coke, resulting in increased yield of dry gas and coke

Method used

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  • Catalytic conversion method capable of improving product selectivity
  • Catalytic conversion method capable of improving product selectivity

Examples

Experimental program
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Embodiment 1

[0054] This embodiment is tested on a medium-sized device of a riser reactor according to the flow process of the accompanying drawing. -1 , the weight ratio of the catalyst to the feedstock oil is 5.2, the carbon content of the catalyst is 0.21% by weight, and the weight ratio of water vapor to the feedstock oil is 0.05 to carry out the cracking reaction, and the reaction product oil gas and the catalyst to be born with carbon are separated in the settler , the product is cut according to the distillation range in the separation system, so as to obtain products such as propylene, gasoline and catalytic wax oil. The operating conditions and product distribution are listed in Table 3.

Embodiment 2

[0056] Example 2 adopts the same process and operating conditions as Example 1, except that the carbon content of the catalyst is 0.28% by weight. The specific operating conditions and product distribution are listed in Table 3.

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Abstract

The invention relates to a catalytic conversion method capable of improving product selectivity. The method comprises the step of carrying out reaction on a raw material oil and a carbon-containing catalyst in a reactor, and is characterized in that the carbon content in the catalyst is 0.15-0.8wt%. The invention relates to the catalytic conversion method capable of improving product selectivity, particularly a method capable of converting a heavy raw material into a high-value product such as gasoline, greatly reducing the yield of dry gas and coke, and realizing the high-efficiency utilization of petroleum resources.

Description

technical field [0001] The invention relates to a catalytic conversion method for improving product selectivity, especially a method for greatly reducing dry gas and coke yields so as to realize efficient utilization of petroleum resources while converting heavy raw materials into high-value products such as gasoline. Background technique [0002] Since the birth of catalytic cracking in the 1940s, it has been the most important lightening process of heavy oil. The first reason is that its raw materials have a wide range of sources, and wax oil can be used, as well as deasphalted oil of atmospheric residue and vacuum residue, or partly mixed with vacuum residue; second, its product scheme is flexible, and it can be fuel type. It can also be a fuel chemical type, such as producing more gasoline, more diesel, more propylene, etc.; third, its product properties can be adjusted through the adjustment of the catalyst formula and the change of the process parameters, such as incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/05C10G11/18C10G55/06
Inventor 崔守业许友好马建国龚剑洪程从礼刘守军唐津莲
Owner CHINA PETROLEUM & CHEM CORP
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